DDx is quite expensive, so I tend to keep it for developing Delta 3200. My normal dev for Acros is in Rodinal which is just superb. I think this film loves being bathed in all developers!
I have that Photo Techniques article that several people mentioned. The author, Fred Newman, used the following setup for the test.
Fuji Acros
Ilford DDX 1+9 dilution
75 degrees F (he lives in Arizona)
Jobo processor
2500 series reels/tanks for roll films
- 135 film for 7'20" - film speed 100
- 120 film for 7'35" - film speed 100
3000 series tank for 4x5 sheet film
- 4x5 film for 7'30" - film speed 100
To summarize, he was "very pleased with the results". Hope this gives you a good place to start.
Thanks for this. There was a recent thread on using DDX at 1+9 instead of 1+4 but info on actual known dev times temp etc was harder to come by. As a DDX user this increases my knowledge on 1+9 uses.
Apart from saving money did Fred Newman have anything to say about any other benefits. I am presuming that result would be as good at 68F with hand inversion agitation and suitable increase in dev time for non rotary processing and lower temp as per the Ilford recommednations.
In the U.K. at this time of year the maintenance of 74F for as long as 7 plus mins is of course possible but is more problematical whereas 68F is about my darkroom temp so requires no special measures - except patience in accepting longer dev times.
On the other hand I have a Jobo processor so could try Fred's process and save even more DDX as the 35mm tank only requires 140ml. A propos the rotary process, did Fred mention whether his times included a pre soak?
Thanks
pentaxuser
He preferred Acros when compared with 3 other medium speed films - Tmax 100, FP4+ and Delta 100. He prefers a film that is "friendly for printing highlights". He likes "a characteristic curve that's a straight line or has a slight shoulder (the curve slopes downwards a little)" and Acros has the curve shape he was looking for. He found the film to have a pleasing separation of highlights and very good shadow separation. Though subjective, he also felt that Acros had finer grain as well as better reciprocity characteristics than the other 3.
He liked DDX because its liquid (which he prefers to powders) and has good keeping qualities (he decants to smaller bottles).
Although he mentions the use of a Jobo, there is no reference to presoaking. I, too, use a Jobo and prefer to presoak (5 minutes). I find that I get more consistent results with a presoak.
Fred Newman is the owner of The View Camera Store. You may want to contact him through the store's website.
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